scholarly journals Rheology of Water-in-Crude Oil Emulsions: Influence of Concentration and Temperature

2018 ◽  
Vol 2 (4) ◽  
pp. 64 ◽  
Author(s):  
Daria S. Kolotova ◽  
Yuliya A. Kuchina ◽  
Lyudmila A. Petrova ◽  
Nicolay G. Voron’ko ◽  
Svetlana R. Derkach
Keyword(s):  
Crude Oil ◽  
Aqueous Phase ◽  
North Sea ◽  
Loss Modulus ◽  
Viscoelastic Behavior ◽  
High Viscosity ◽  
Phase Content ◽  
Oil Emulsion ◽  
The North ◽  
Oil Emulsions

The effect of aqueous phase content and temperature North Sea crude oil emulsion viscoelastic behavior has been studied. Heavy crude oil from the North Sea is of high viscosity and is capable of forming stable water-in-crude oil (w/o) emulsions without introducing any synthetic surfactants. The aqueous phase volume content was varied from 1 to 40%, and the temperature was varied from 0 to 30 °C. The w/o emulsion viscosity increased sharply when the aqueous phase content exceeds 20%, being more pronounced at the lower temperatures. The viscosity flow curves for emulsions containing more than 20% aqueous phase demonstrate non-Newtonian behavior, in contrast to crude oil, which is Newtonian. The coefficients in the master curve describing the viscosity-temperature dependence were determined. Oscillatory rheological tests showed that the loss modulus substantially exceeds the storage modulus which indicates the liquid-like state of the emulsions.

Influence of pressure and solvency on the separation of water-in-crude-oil emulsions from the North Sea

2001 ◽  
Vol 31 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Inge Harald Auflem ◽  
Harald Kallevik ◽  
Arild Westvik ◽  
Johan Sjöblom
Keyword(s):  
Crude Oil ◽  
North Sea ◽  
The North ◽  
The North Sea ◽  
Oil Emulsions

Demulsification of a Water-in-crude Oil Emulsion with a Corn Oil BasedDemulsifier using the Response Surface Methodology: Modelling and Optimization

2021 ◽  
Vol 14 ◽  
Author(s):  
Abed Saad ◽  
Nour Abdurahman ◽  
Rosli Mohd Yunus
Keyword(s):  
Response Surface Methodology ◽  
Crude Oil ◽  
Water Content ◽  
Response Surface ◽  
Separation Efficiency ◽  
Corn Oil ◽  
Oil Emulsion ◽  
Optimal Values ◽  
Input Variables ◽  
Oil Emulsions

: In this study, the Sany-glass test was used to evaluate the performance of a new surfactant prepared from corn oil as a demulsifier for crude oil emulsions. Central composite design (CCD), based on the response surface methodology (RSM), was used to investigate the effect of four variables, including demulsifier dosage, water content, temperature, and pH, on the efficiency of water removal from the emulsion. As well, analysis of variance was applied to examine the precision of the CCD mathematical model. The results indicate that demulsifier dose and emulsion pH are two significant parameters determining demulsification. The maximum separation efficiency of 96% was attained at an alkaline pH and with 3500 ppm demulsifier. According to the RSM analysis, the optimal values for the input variables are 40% water content, 3500 ppm demulsifier, 60 °C, and pH 8.

scholarly journals Microwave demulsification of heavy crude oil emulsions: Analysis of acid species recovered in the aqueous phase

Fuel ◽  
2014 ◽  
Vol 128 ◽  
pp. 141-147 ◽  
Author(s):  
Elisângela B. da Silva ◽  
Denisson Santos ◽  
Mayara Paes de Brito ◽  
Regina C.L. Guimarães ◽  
Bianca M.S. Ferreira ◽  
...  
Keyword(s):  
Crude Oil ◽  
Aqueous Phase ◽  
Heavy Crude Oil ◽  
Heavy Crude ◽  
Oil Emulsions

scholarly journals Optimization of (RP6000 and MAKS-9150) demulsifiers for separation of water from (Kirkuk / baba, Khbbaz) crude oil emulsion

2020 ◽  
Vol 10 (4) ◽  
pp. 69-84
Author(s):  
Dr. Mueyyed Akram Arslan ◽  
Dr. Ghassan Burhan Yaqoob
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Ph Effect ◽  
Test Method ◽  
Water Separation ◽  
Oil Emulsion ◽  
Bottle Test ◽  
Oil Emulsions

In this study oil-soluble (RP6000 and MAKS-9150) emulsion breakers have been selected for separation of water from Kirkuk / baba (50oC), Khbbaz (40oC) crude oil emulsions and their activity measured using the Bottle test method at different concentration and found the activity of RP6000 demulsified best than MAKS-9150 emulsion breakers. RP6000 separated water (100%) in (15)min., (40)ppm and in (60)min., (20)ppm of demulsified for Kirkuk/ baba Crude oil and for khbbaz Crude oil the (100%) water separation was in (15)min., (80)ppm and in (30)min., (60)ppm and PH effect, salinity, temperature and density of emulsion stability depending on literature were explained for Optimization.

scholarly journals An Overview of Recent Advances in State-of-the-Art Techniques in the Demulsification of Crude Oil Emulsions

Processes ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 470 ◽  
Author(s):  
M. A. Saad ◽  
Mohammed Kamil ◽  
N. H. Abdurahman ◽  
Rosli Mohd Yunus ◽  
Omar I. Awad
Keyword(s):  
Crude Oil ◽  
Produced Water ◽  
State Of The Art ◽  
Synergistic Effects ◽  
Water Discharge ◽  
Future Research ◽  
Oil Emulsion ◽  
Oil Emulsions ◽  
Demulsification Process ◽  
Different Sources

The processing of crude oil often requires the extraction of a large amount of water. Frequently, crude oil is mixed with water to form water-in-crude oil emulsions as the result of factors such as high shear at the production wellhead and surface-active substances that are naturally present in crude oil. These emulsions are undesirable and require demulsification to remove the dispersed water and associated inorganic salts in order to meet production and transportation specifications. Additionally, the demulsification of these crude oil emulsions mitigates corrosion and catalyst poisoning and invariably maximizes the overall profitability of crude oil production. Recently, there has been growing research interest in developing workable solutions to the difficulties associated with transporting and refining crude oil emulsions and the restrictions on produced water discharge. Therefore, this paper reviews the recent research efforts on state-of-the-art demulsification techniques. First, an overview of crude oil emulsion types, formation, and stability is presented. Then, the parameters and mechanisms of emulsification formation and different demulsification techniques are extensively examined. It is worth noting that the efficiency of each of these techniques is dependent on the operating parameters and their interplay. Moreover, a more effective demulsification process could be attained by leveraging synergistic effects by combining one or more of these techniques. Finally, this literature review then culminates with propositions for future research. Therefore, the findings of this study can help for a better understanding of the formation and mechanisms of the various demulsification methods of crude oil to work on the development of green demulsifiers by different sources.

Considerations for Using a Hydraulic Fracturing Fluid for Breaking Crude Oil Emulsion from Reservoir

2018 ◽  
Vol 69 (6) ◽  
pp. 1498-1500
Author(s):  
Lacramioara Olarasu ◽  
Maria Stoicescu ◽  
Ion Malureanu ◽  
Ion Onutu
Keyword(s):  
Hydraulic Fracturing ◽  
Crude Oil ◽  
Oil Production ◽  
Oil Field ◽  
Reservoir Rock ◽  
Oil Well ◽  
Strong Impact ◽  
Fracturing Fluid ◽  
Oil Emulsion ◽  
Oil Emulsions

In the oil industry, crude oil emulsions appear very frequently in almost all activities, starting with drilling and continuing with completion, production, transportation and processing. They are usually formed naturally or during oil production and their presence can have a strong impact on oil production and facilities. In this paper we addressed the problem of oil emulsions present in a reservoir with unfavorable flow properties. It is known that the presence of emulsions in a reservoir can influence both flow capacity and the quality of its crude oil, especially when they are associated with porous medium�s low values of permeability. Considering this, we have introduced a new procedure for selecting a special fluid of fracture. This fluid has two main roles: to create new flow paths from the reservoir rock to wells; to produce emulsion breaking of emulsified oil from pore of rocks. Best fracturing fluid performance was determined by laboratory tests. Selected fluid was then used to stimulate an oil well located on an oil field from Romania. In the final section of this paper,we are presenting a short analysis of the efficiency of the operation of hydraulic fracturing stimulation probe associated with the crude oil emulsion breaking process.

scholarly journals Malaysian Crude Oil Emulsions : Stability Study

REAKTOR ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 29
Author(s):  
B. Pramudono ◽  
H. B. Mat
Keyword(s):  
Crude Oil ◽  
Emulsion Stability ◽  
Stability Study ◽  
Active Components ◽  
Oil Emulsion ◽  
Result Show ◽  
Oil Emulsions ◽  
The Stability ◽  
Stability Of Water ◽  
Water In Oil Emulsion

The stability of water-in-oil emulsion of some Malaysian crude oils was studied with particular emphasis on effect of interfacial active components existed in the crude oil, i.e. asphaltene, resin and wax. The emulsion stability was studied by measuring the volume of water or oil phase separated in variation with time, water hold up, and the heights of the sedimenting/coalescing interfaces during the separation at various temperatures. The study investigated the influence of asphaltene, resin and wax on emultion stability if it`s present in the crude oil alone, together or combination one of the others. The result show that the interfacial active component that stabilize emulsion is asphaltene. The resin and wax  do not form stale emulsion either aloneor together. There is a correlation between emulsion stability and physicochemical properties of crude oil which showed that higher asphaltene content in the crude oil would form more stable emultion. Increased temperature was found to cause instability of emultion. Keywords : emultion stability, crude oil, asphaltene, resin and wax

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